<?php
header('Content-Type: text/plain; charset=UTF-8');

//header('Content-Type: application/json; charset=UTF-8');//拿的值是对象

//header('Content-Type: text/html; charset=UTF-8');

//echo "eliufyoaw73eyaoiushdoi7qae";

echo json_encode($_REQUEST);//拿的值是字符串


//var_export($_REQUEST);//拿的值是字符串

//var_dump($_REQUEST);//预定变量，可传递参数

//echo "数据";

